Interpretative transport modeling of the WEST boundary plasma: Main plasma and light impurities

A. Gallo; A. Sepetys; Y. Marandet; H. Bufferand; G. Ciraolo; N. Fedorczak; S. Brezinsek; J. Bucalossi; J. Coenen; F. Clairet; Y. Corre; C. Desgranges; P. Devynck; J. Gaspar; R. Guirlet; J. Gunn; C. C. Klepper; J. Y. Pascal; P. Tamain; E. Tsitrone; E. A. Unterberg

doi:10.1088/1741-4326/abb95b

Interpretative transport modeling of the WEST boundary plasma: Main plasma and light impurities

A. Gallo, A. Sepetys, Y. Marandet, H. Bufferand, G. Ciraolo, N. Fedorczak, S. Brezinsek, J. Bucalossi, J. Coenen, F. Clairet, Y. Corre, C. Desgranges, P. Devynck, J. Gaspar, R. Guirlet, J. Gunn, C. C. Klepper, J. Y. Pascal, P. Tamain, E. TsitroneE. A. Unterberg

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21 Scopus citations

Abstract

Understanding impurity transport in tokamak plasmas is crucial to control radiative losses and material migration in future magnetic fusion reactors. In this work we deploy the SolEdge2D-EIRENE code to model the boundary plasma in a WEST discharge, satisfactorily reproducing measurements of both upstream and divertor plasma conditions. The spatial distribution of oxygen, studied here as a representative light impurity, is compared to vacuum ultraviolet spectroscopy measurements acquired with an oscillating line of sight. The simulation captures a key feature of the experiment, namely a factor of ≃2 higher oxygen brightness in the inner divertor region compared to the outer one. This spatial asymmetry in oxygen concentration is interpreted by analyzing the balance of friction forces and thermal gradient forces that the light impurity exchanges with the main plasma.

Original language	English
Article number	126048
Journal	Nuclear Fusion
Volume	60
Issue number	12
DOIs	https://doi.org/10.1088/1741-4326/abb95b
State	Published - Dec 2020

Funding

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under Grant Agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Work performed under EUROfusion WP PFC. Centre de Calcul Intensif d'Aix-Marseille is acknowledged for granting access to its high performance computing resources.

Keywords

WEST
edge plasma modeling
light impurity transport

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/1741-4326/abb95b

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Gallo, A., Sepetys, A., Marandet, Y., Bufferand, H., Ciraolo, G., Fedorczak, N., Brezinsek, S., Bucalossi, J., Coenen, J., Clairet, F., Corre, Y., Desgranges, C., Devynck, P., Gaspar, J., Guirlet, R., Gunn, J., Klepper, C. C., Pascal, J. Y., Tamain, P., ... Unterberg, E. A. (2020). Interpretative transport modeling of the WEST boundary plasma: Main plasma and light impurities. Nuclear Fusion, 60(12), Article 126048. https://doi.org/10.1088/1741-4326/abb95b

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title = "Interpretative transport modeling of the WEST boundary plasma: Main plasma and light impurities",

abstract = "Understanding impurity transport in tokamak plasmas is crucial to control radiative losses and material migration in future magnetic fusion reactors. In this work we deploy the SolEdge2D-EIRENE code to model the boundary plasma in a WEST discharge, satisfactorily reproducing measurements of both upstream and divertor plasma conditions. The spatial distribution of oxygen, studied here as a representative light impurity, is compared to vacuum ultraviolet spectroscopy measurements acquired with an oscillating line of sight. The simulation captures a key feature of the experiment, namely a factor of ≃2 higher oxygen brightness in the inner divertor region compared to the outer one. This spatial asymmetry in oxygen concentration is interpreted by analyzing the balance of friction forces and thermal gradient forces that the light impurity exchanges with the main plasma.",

keywords = "WEST, edge plasma modeling, light impurity transport",

author = "A. Gallo and A. Sepetys and Y. Marandet and H. Bufferand and G. Ciraolo and N. Fedorczak and S. Brezinsek and J. Bucalossi and J. Coenen and F. Clairet and Y. Corre and C. Desgranges and P. Devynck and J. Gaspar and R. Guirlet and J. Gunn and Klepper, {C. C.} and Pascal, {J. Y.} and P. Tamain and E. Tsitrone and Unterberg, {E. A.}",

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Gallo, A, Sepetys, A, Marandet, Y, Bufferand, H, Ciraolo, G, Fedorczak, N, Brezinsek, S, Bucalossi, J, Coenen, J, Clairet, F, Corre, Y, Desgranges, C, Devynck, P, Gaspar, J, Guirlet, R, Gunn, J, Klepper, CC, Pascal, JY, Tamain, P, Tsitrone, E & Unterberg, EA 2020, 'Interpretative transport modeling of the WEST boundary plasma: Main plasma and light impurities', Nuclear Fusion, vol. 60, no. 12, 126048. https://doi.org/10.1088/1741-4326/abb95b

TY - JOUR

T1 - Interpretative transport modeling of the WEST boundary plasma

T2 - Main plasma and light impurities

AU - Gallo, A.

AU - Sepetys, A.

AU - Marandet, Y.

AU - Bufferand, H.

AU - Ciraolo, G.

AU - Fedorczak, N.

AU - Brezinsek, S.

AU - Bucalossi, J.

AU - Coenen, J.

AU - Clairet, F.

AU - Corre, Y.

AU - Desgranges, C.

AU - Devynck, P.

AU - Gaspar, J.

AU - Guirlet, R.

AU - Gunn, J.

AU - Klepper, C. C.

AU - Pascal, J. Y.

AU - Tamain, P.

AU - Tsitrone, E.

AU - Unterberg, E. A.

PY - 2020/12

Y1 - 2020/12

N2 - Understanding impurity transport in tokamak plasmas is crucial to control radiative losses and material migration in future magnetic fusion reactors. In this work we deploy the SolEdge2D-EIRENE code to model the boundary plasma in a WEST discharge, satisfactorily reproducing measurements of both upstream and divertor plasma conditions. The spatial distribution of oxygen, studied here as a representative light impurity, is compared to vacuum ultraviolet spectroscopy measurements acquired with an oscillating line of sight. The simulation captures a key feature of the experiment, namely a factor of ≃2 higher oxygen brightness in the inner divertor region compared to the outer one. This spatial asymmetry in oxygen concentration is interpreted by analyzing the balance of friction forces and thermal gradient forces that the light impurity exchanges with the main plasma.

AB - Understanding impurity transport in tokamak plasmas is crucial to control radiative losses and material migration in future magnetic fusion reactors. In this work we deploy the SolEdge2D-EIRENE code to model the boundary plasma in a WEST discharge, satisfactorily reproducing measurements of both upstream and divertor plasma conditions. The spatial distribution of oxygen, studied here as a representative light impurity, is compared to vacuum ultraviolet spectroscopy measurements acquired with an oscillating line of sight. The simulation captures a key feature of the experiment, namely a factor of ≃2 higher oxygen brightness in the inner divertor region compared to the outer one. This spatial asymmetry in oxygen concentration is interpreted by analyzing the balance of friction forces and thermal gradient forces that the light impurity exchanges with the main plasma.

KW - WEST

KW - edge plasma modeling

KW - light impurity transport

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DO - 10.1088/1741-4326/abb95b

M3 - Article

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SN - 0029-5515

VL - 60

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 12

M1 - 126048

ER -

Interpretative transport modeling of the WEST boundary plasma: Main plasma and light impurities

Abstract

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Keywords

UN SDGs

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